Nut-lock



(Model.)v L PENROD-- NUTLOGK.

180.278.872. Patented May1,1883

, #fw i u A N. PETERS. Phulo-Lx'thgraphar. Washngun. DAC,

UNITED v STATES PATENT OFFICE.

JOHN F. PENROD, OF BLAIRSVIIJLE INTERSECTION, PENNSYLVAN'IA.

NUT- LOCK.

sEcIFrcATIoN forming pertef Lettere Patent No. 276,872, dated May 1, 1883. Application filed December 22, 1882. (Model.)

To all whom it may concern:

Beit known that I, JOHN F. PENROD, a citizen of the United States, residing at Blairsville Intersection, county ot Westmoreland, State of Pennsylvania, have invented certain new and useful Improvements in Nut-Locks, of which the following is a specitcatinnfreference being had therein to the accompanying drawings.

My invention relates to an improvement in nut-locks to be applied to nuts on the bolts that secure fish-plates on rail-joints; and it consists in blocks at the ends of two movable arms orlevers, pivoted to the fish-plate, which blocks, when lowered, drop in between the nuts` to prevent their turning, and when raised set the nut free to be tightened or removed, as will be fully described hereinafter.

The accompanying drawings represent my invention.

Figure l is a side elevation of my invention. Fig. 2 isa plan view of the same.

The fish-plate A is ofthe usual form, and of a thickness to be flush with the crown of the rails when placed on the web, with one hole at each end for the bolts, that are inserted from the opposite side, to pass through both rails and {ish-plates. At the middle of the fishplate isa short projection, c, with an oblong plate, d, that extends to both sides beyond the projectiomand isof the width of the fish-plate.V

The lower edges ot' the fish-plate and ot' the plate d are beveled, and tit thei'oot of the rails upon which they rest when attached to the web. ln the space at each side of the projection 0between the fish-plate and the plate d, are pivoted arms or levers e, at the ends of which are movable blocks j', of a length equal to the distances between the nuts a and b. The length of the arms c is such that, when lowered on a line with the fish-plate, the blocks j' enter into the space between the nuts c and b, and, bearing against their sides, prevent their turning back or forward. To allow the arms e to be laid level with the upper edge ot the fish-plate, their under sides are partly cut awayover the nuts a, leaving shoulders that,

with the block f, when lowered, combine to lock these nuts. The blocks f, whenvlowered, are secured in that 4position by means ot' a plate, g, laid ou t-op of them and oil-the upper edge ot' the {ish-plate, andseoured by a screw, h, that enters into the projection c'. When desired to loosen the nuts or to gain Vaccess to them ft'or any purpose the plate g has iii-st to vbe removed, when the arms holding the blocks can be raised to expose the nuts.

Having thus described my invention, I claiml. In a nut-lock, the combination ot' a pivoted arm provided with means to lock a nut or nuts in place, with a locking plate or device to catch down over the top ot' the arm, substantially as shown.

. 2. 1n a nut-lock, the combination of the lishplato A and the nuts a b upon the bolts with 4the projection o, plate d,.arms ef,lockingplate g, and screw h, substantially as set forth.

In testimony whereof I affix my signature, in presence of two witnesses, this 27th day of October, 1882.

JOHN F. PENRO l).

Witnesses:

J. M. HORACE, GEO. MGCUNE. 

